Heat capacity of methane-krypton solid solutions. Conversion effect

Автор(и)

  • I. Ya. Minchina B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • V. G. Manzhelii B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • M. I. Bagatskii B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • O. V. Sklyar B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • D. A. Mashchenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • M. A. Pokhodenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine

DOI:

https://doi.org/10.1063/1.1388422

Ключові слова:

PACS: 65.40. g

Анотація

The heat capacity of Kr-nCH4 solid solutions with the concentrations n= 1; 5; 10% and of the solid solution Kr-1%CH4-0.2%O2 has been studied at 0.7-8 K. The contributions of Crot to the heat capacity of the solutions caused by the rotation of the CH4 molecules are estimated. The deviations of the measured Crot from the values corresponding to the equilibrium distribution of the nuclear spin CH4 modifications are dependent on the correlation between the characteristic times of conversion and of the calorimetric experiment. The effects of temperature, O2 impurities, and CH4 clusters upon the conversion rate are studied. It is shown that the hybrid mechanism of conversion proposed by Berlinsky and Nijman, which takes into account both intramolecular and intermolecular interactions of the proton spins, is predominant.

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Опубліковано

2001-07-10

Як цитувати

(1)
Minchina, I. Y.; Manzhelii, V. G.; Bagatskii, M. I.; Sklyar, O. V.; Mashchenko, D. A.; Pokhodenko, M. A. Heat Capacity of Methane-Krypton Solid Solutions. Conversion Effect. Fiz. Nizk. Temp. 2001, 27, 773-779.

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